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* Linux 3.13 compat: Handle __must_check bdi_setup_and_registerRichard Yao2014-03-241-2/+3
| | | | | | | | | | | | | | | torvalds/linux@8077c0d983ab276ec5f2700df56a64d671781905 added a __must_check to the bdi_setup_and_register(), which caused our autotools check to break. zfsonlinux/zfs@729210564a5325e190fc4fba22bf17bacf957ace was intended to correct that, but it depended on -Wno-unused-result, which is unrecognized in older GCC versions. That commit has been reverted in favor of a solution that does not require -Wno-unused-result. Signed-off-by: Richard Yao <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #2102 Closes #2135
* Revert "Properly ignore bdi_setup_and_register return value"Richard Yao2014-03-241-4/+1
| | | | | | | | | | Older GCC versions do not obey -Wno-unused-result. This reverts commit 729210564a5325e190fc4fba22bf17bacf957ace in favor of a solution that does not require -Wno-unused-result. Signed-off-by: Richard Yao <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Issue #1906
* Properly ignore bdi_setup_and_register return valueRichard Yao2013-12-041-1/+4
| | | | | | | | This broke compilation against Linux 3.13 and GCC 4.7.3. Signed-off-by: Richard Yao <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #1906
* When checking for symbol exports, try compiling.Etienne Dechamps2012-07-261-7/+13
| | | | | | | | | | | | | | | | | | | | This patch adds a new autoconf function: ZFS_LINUX_TRY_COMPILE_SYMBOL. This new function does the following: - Call LINUX_TRY_COMPILE with the specified parameters. - If unsuccessful, return false. - If successful and we're configuring with --enable-linux-builtin, return true. - Else, call CHECK_SYMBOL_EXPORT with the specified parameters and return the result. All calls to CHECK_SYMBOL_EXPORT are converted to LINUX_TRY_COMPILE_SYMBOL so that the tests work even when configuring for builtin on a kernel which doesn't have loadable module support, or hasn't been built yet. Signed-off-by: Brian Behlendorf <[email protected]> Issue #851
* Simplify BDI integrationBrian Behlendorf2011-11-081-0/+15
Update the code to use the bdi_setup_and_register() helper to simplify the bdi integration code. The updated code now just registers the bdi during mount and destroys it during unmount. The only complication is that for 2.6.32 - 2.6.33 kernels the helper wasn't available so in these cases the zfs code must provide it. Luckily the bdi_setup_and_register() function is trivial. Signed-off-by: Brian Behlendorf <[email protected]> Closes #367
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