From: Deepa Dinamani Subject: [PATCH v3 4/5] vfs: Add timestamp_truncate() api Date: Sat, 18 Feb 2017 15:30:07 -0800 Message-ID: <1487460608-15697-5-git-send-email-deepa.kernel@gmail.com> References: <1487460608-15697-1-git-send-email-deepa.kernel@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Cc: linux-fsdevel@vger.kernel.org, y2038@lists.linaro.org, linux-kernel@vger.kernel.org, arnd@arndb.de To: viro@zeniv.linux.org.uk, tytso@mit.edu, adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org Return-path: In-Reply-To: <1487460608-15697-1-git-send-email-deepa.kernel@gmail.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: y2038-bounces@lists.linaro.org Sender: "Y2038" List-Id: linux-ext4.vger.kernel.org dGltZXNwZWNfdHJ1bmMoKSBmdW5jdGlvbiBpcyB1c2VkIHRvIHRydW5jYXRlIGEKZmlsZXN5c3Rl bSB0aW1lc3RhbXAgdG8gdGhlIHJpZ2h0IGdyYW51bGFyaXR5LgpCdXQsIHRoZSBmdW5jdGlvbiBk b2VzIG5vdCBjbGFtcCB0dl9zZWMgcGFydCBvZiB0aGUKdGltZXN0YW1wcyBhY2NvcmRpbmcgdG8g dGhlIGZpbGVzeXN0ZW0gdGltZXN0YW1wIGxpbWl0cy4KCkFsc28sIHRpbWVzcGVjX3RydW5jKCkg aXMgZXhjbHVzaXZlbHkgdXNlZCBmb3IgZmlsZXN5c3RlbQp0aW1lc3RhbXBzLiBNb3ZlIHRoZSBh cGkgdG8gYmUgcGFydCBvZiB2ZnMuCgpUaGUgcmVwbGFjZW1lbnQgYXBpOiB0aW1lc3RhbXBfdHJ1 bmNhdGUoKSBhbHNvIGFsdGVycyB0aGUKc2lnbmF0dXJlIG9mIHRoZSBmdW5jdGlvbiB0byBhY2Nv bW1vZGF0ZSBmaWxlc3lzdGVtCnRpbWVzdGFtcCBjbGFtcGluZyBhY2NvcmRpbmcgdG8gZmxlc3lz dGVtIGxpbWl0cy4KCk5vdGUgdGhhdCB0aGUgY2xhbXBfdCBtYWNybyBpcyB1c2VkIGZvciBjbGFt cGluZyBoZXJlIGFzIHZmcwppcyBub3QgeWV0IHVzaW5nIHN0cnVjdCB0aW1lc3BlYzY0IGludGVy bmFsbHkuIFRoaXMgaXMKcmVxdWlyZWQgZm9yIGNvbXBpbGF0aW9uIHB1cnBvc2VzLgpBbHNvIG5v dGUgdGhhdCBjbGFtcCB3b24ndCBkbyB0aGUgcmlnaHQgdGhpbmcgZm9yIHRpbWVzdGFtcHMKYmV5 b25kIDIwMzggb24gMzItYml0IG1hY2hpbmVzIHVudGlsIHRoZSB2ZnMgdXNlcyB0aW1lc3BlYzY0 LgpBZnRlciB0aGUgdmZzIGlzIHRyYW5zaXRpb25lZCB0byB1c2UgdGltZXNwZWM2NCBmb3IgdGlt ZXN0YW1wcywKY2xhbXBfdCgpIGNhbiBiZSByZXBsYWNlZCBieSBjbGFtcCgpLgoKU2lnbmVkLW9m Zi1ieTogRGVlcGEgRGluYW1hbmkgPGRlZXBhLmtlcm5lbEBnbWFpbC5jb20+Ci0tLQogZnMvaW5v ZGUuYyB8IDMyICsrKysrKysrKysrKysrKysrKysrKysrKysrKysrKystCiAxIGZpbGUgY2hhbmdl ZCwgMzEgaW5zZXJ0aW9ucygrKSwgMSBkZWxldGlvbigtKQoKZGlmZiAtLWdpdCBhL2ZzL2lub2Rl LmMgYi9mcy9pbm9kZS5jCmluZGV4IDA1NzNhM2UuLjZhMWJjMTIgMTAwNjQ0Ci0tLSBhL2ZzL2lu b2RlLmMKKysrIGIvZnMvaW5vZGUuYwpAQCAtMjExNCw2ICsyMTE0LDM2IEBAIHZvaWQgaW5vZGVf bm9oaWdobWVtKHN0cnVjdCBpbm9kZSAqaW5vZGUpCiBFWFBPUlRfU1lNQk9MKGlub2RlX25vaGln aG1lbSk7CiAKIC8qKgorICogZnNfdGltZXNwZWNfdHJ1bmMgLSBUcnVuY2F0ZSB0aW1lc3BlYyB0 byBhIGdyYW51bGFyaXR5CisgKiBAdDogVGltZXNwZWMKKyAqIEBncmFuOiBHcmFudWxhcml0eSBp biBucy4KKyAqCisgKiBUcnVuY2F0ZSBhIHRpbWVzcGVjIHRvIGEgZ3JhbnVsYXJpdHkuIEFsd2F5 cyByb3VuZHMgZG93bi4gZ3JhbiBtdXN0CisgKiBub3QgYmUgMCBub3IgZ3JlYXRlciB0aGFuIGEg c2Vjb25kIChOU0VDX1BFUl9TRUMsIG9yIDEwXjkgbnMpLgorICovCitzdHJ1Y3QgdGltZXNwZWMg dGltZXN0YW1wX3RydW5jYXRlKHN0cnVjdCB0aW1lc3BlYyB0LCBzdHJ1Y3QgaW5vZGUgKmlub2Rl KQoreworCXN0cnVjdCBzdXBlcl9ibG9jayAqc2IgPSBpbm9kZS0+aV9zYjsKKwl1bnNpZ25lZCBp bnQgZ3JhbiA9IHNiLT5zX3RpbWVfZ3JhbjsKKworCXQudHZfc2VjID0gY2xhbXBfdCh0aW1lNjRf dCwgdC50dl9zZWMsIHNiLT5zX3RpbWVfbWluLCBzYi0+c190aW1lX21heCk7CisKKwkvKiBBdm9p ZCBkaXZpc2lvbiBpbiB0aGUgY29tbW9uIGNhc2VzIDEgbnMgYW5kIDEgcy4gKi8KKwlpZiAoZ3Jh biA9PSAxKSB7CisJCS8qIG5vdGhpbmcgKi8KKwl9IGVsc2UgaWYgKGdyYW4gPT0gTlNFQ19QRVJf U0VDKSB7CisJCXQudHZfbnNlYyA9IDA7CisJfSBlbHNlIGlmIChncmFuID4gMSAmJiBncmFuIDwg TlNFQ19QRVJfU0VDKSB7CisJCXQudHZfbnNlYyAtPSB0LnR2X25zZWMgJSBncmFuOworCX0gZWxz ZSB7CisJCVdBUk4oMSwgImlsbGVnYWwgZmlsZSB0aW1lIGdyYW51bGFyaXR5OiAldSIsIGdyYW4p OworCX0KKwlyZXR1cm4gdDsKK30KK0VYUE9SVF9TWU1CT0wodGltZXN0YW1wX3RydW5jYXRlKTsK KworCisvKioKICAqIGN1cnJlbnRfdGltZSAtIFJldHVybiBGUyB0aW1lCiAgKiBAaW5vZGU6IGlu b2RlLgogICoKQEAgLTIxMzIsNiArMjE2Miw2IEBAIHN0cnVjdCB0aW1lc3BlYyBjdXJyZW50X3Rp bWUoc3RydWN0IGlub2RlICppbm9kZSkKIAkJcmV0dXJuIG5vdzsKIAl9CiAKLQlyZXR1cm4gdGlt ZXNwZWNfdHJ1bmMobm93LCBpbm9kZS0+aV9zYi0+c190aW1lX2dyYW4pOworCXJldHVybiB0aW1l c3RhbXBfdHJ1bmNhdGUobm93LCBpbm9kZSk7CiB9CiBFWFBPUlRfU1lNQk9MKGN1cnJlbnRfdGlt ZSk7Ci0tIAoyLjcuNAoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX18KWTIwMzggbWFpbGluZyBsaXN0ClkyMDM4QGxpc3RzLmxpbmFyby5vcmcKaHR0cHM6Ly9s aXN0cy5saW5hcm8ub3JnL21haWxtYW4vbGlzdGluZm8veTIwMzgK